| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear shaft support structure, providing the optimum bearing rigidity according to the transmission torque. SOLUTION: In this gear shaft support structure, a gear shaft 11 having reduction gears 8, 9 is supported by a pair of opposite tapered roller bearings 12, 14. One end shaft part 11A of the gear shaft 11 is supported on an inner race of one tapered roller bearing 14 to relatively rotate and relatively move in the axial direction. Thrust cam mechanisms 15 to 18 including a cam plate 15 and a cam roller 18 for generating the axial force for separating the gear shaft 11 from the inner race of one tapered roller bearing 14 are disposed corresponding to a rotary phase shift of both in the periphery of the shaft part 11A of the gear 11 between the gear shaft 11 and one tapered roller bearing 14. Pre-load is applied to a pair of tapered roller shafts 12, 14 including the thrust force cam mechanisms 15 to 18. COPYRIGHT: (C)2006,JPO&NCIPI |
